Filterless Non-Oversampling technique of DAC BOX S FL:
Concept of DAC BOX S FL is based on the original format of the Audio-CD, (which means 16bit and 44,1 kHz) with a maximum transmitted audio frequency of 20kHz.
DAC BOX S FL uses 4 TDA 1543T DA-Chips in parallel Dual Differential Mode, which guarantees high precision and very low distortion in the audible frequency-range below 20kHz.
Ultra low distortion spectrum below 20kHz is very similar to those of tube amplifiers. Distortion levels rise signbificantly above 20kHz, which has no effect in playback of audio CDs, because this is above audible frequency range.
The SMD output stage is direct-coupled to DA-converters for best results.
Soundquality is extremely cool, even though TDA-1543 operate best at higher temperature levels. Good heatsinks are needed to deal with heat for save operation. But this specific configuration has a special advantage:
No additional filtering needed! This has positive results in overall sound quality (even though in metrological terms, this is not the optimum).
Sound quality is naturally balanced with lots of detail and articulate and strong bass For many audiophiles this DA conversion principle is the best possible link between musician and listener!
More about Non-oversampling design principle can be found on: